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* Biostatistics q
 #862780  
  p4 - 07/17/20 09:21
 
  Prevalence 20%
Sensitivity 90%
Specificity 80 %
Positive predictive value?
 
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* Re:Biostatistics q
#3389403
  p4 - 07/17/20 09:46
 
  Please discuss the answer  
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* Re:Biostatistics q
#3389419
  petro - 07/19/20 09:49
 
  Positive predictive values can be calculated in several ways. Two of the most common are:

1.) Positive Predictive Value = number of true positives / number of true positives + number of false positives

and

2.) Positive Predictive Value = Sensitivity x Prevalence / Sensitivity x prevalence + (1- specificity) x (1-prevalence)


so you can input the data and do the calculation.
 
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* Re:Biostatistics q
#3389457
  p4 - 07/23/20 10:31
 
  Thxs  
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